材料抵抗产生塑性变形和（）的能力叫做强度。

A. 正确
B. 错误

A. 三个月
B. 两个月
C. 三个周

A. to provide service internetworking
B. to support transparency for Layer 2 frames
C. as a connection identifier to indicate destination
D. as a mapping to the DLCI in service internetworking
E. to provide a trunk by which all VLANs can navigate from one site to one or multiple site